Microinvasive carcinoma of the vagina: a distinct clinical entity?

Six patients with superficially invasive squamous carcinoma of the vagina are described. All had less than 2.5 mm of invasion as measured from the surface, lacked involvement of the lymph-vascular spaces, and arose within a field of carcinoma in situ. Three of the six had previously been treated for carcinoma of the cervix. The patients with microinvasive carcinoma had a median age 10 years younger than that of patients with Stage I carcinoma of the vagina. Treatment of the six patients has been by partial or total vaginectomy. With follow-up of 51 to 172 months, there have been no recurrences. More experience is needed to define microinvasive squamous carcinoma of the vagina and to determine the optimal treatment for these lesions.